Finding the Fourth Proportional to 1,456.60, 2,179.98 and 1,330.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.60 : 2,179.98 = 1,330.24 : x
2. Step 2: Convert to fraction form
   1,456.60/2,179.98 = 1,330.24/x
3. Step 3: Cross multiply
   1,456.60x = 2,179.98 × 1,330.24
4. Step 4: Simplify right side
   1,456.60x = 2,899,896.60
5. Step 5: Solve for x
   x = 2,899,896.60/1,456.60
6. Step 6: Final answer
   x = 1,990.87